Dynamic vibration-absorption turning tool based on extruding working mode of magnetorheological fluid

Abstract

The invention relates to a dynamic vibration-absorption turning tool based on an extruding working mode of magnetorheological fluid. The dynamic vibration-absorption turning tool comprises a main vibration component and a magnetorheological dynamic vibration-absorption component, wherein the main vibration component is fixedly connected with a normal turning tool, and the magnetorheological dynamic vibration-absorption component is hung on the normal turning tool. The dynamic vibration-absorption turning tool is characterized in that the main vibration component and the magnetorheological dynamic vibration-absorption component are supported and connected by virtue of the magnetorheological fluid and roll balls, wherein the rigidity and damp of the magnetorheological can be changed under a magnetic field, the roll balls are mounted on key slots in two sides of a cutter bar shaft of the main vibration component, and the magnetorheological fluid is filled in a round disc magnetic pole, upper tank body, lower tank body and end cover of the magnetorheological dynamic vibration-absorption component as well as an axial gap between first and second disc-shaped iron cores of the main vibration component. According to the dynamic vibration-absorption turning tool, the magnetorheological fluid is used as a regulating-executing medium, and the parameters such as the damp and inherent frequency of the magnetorheological dynamic vibration-absorption component are changed in real-time and online manners by regulating the magnetic induction intensity aiming at vibration frequencies under different turning working conditions, so that the vibration energy in the turning tool of a main vibration system is maximally absorbed, and the turning vibration is effectively restrained.

Description

technical field [0001] The invention relates to a vibration damping device for turning, in particular to a power vibration-absorbing turning tool based on a magneto-rheological fluid extrusion working mode. Background technique [0002] In recent years, high-speed and precision machining technology has been increasingly used in the machining of large and precision parts in the fields of aerospace, optoelectronics and communications. The restrictive effect of micro-amplitude vibration on the improvement of machining accuracy has become increasingly prominent. On the basis of using air springs and related active control methods to effectively isolate the external vibration source of the machine, the vibration from the cutting process itself has entered the sight of researchers and has become a limitation. One of the key factors for high-efficiency precision cutting technology to exert its advantages. Therefore, it is imminent to find a new method to effectively suppress cutti...

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Problems solved by technology

Compared with the research on the extrusion characteristics of magnetorheological fluids, there are few reports on the application research of magnetorheological devices based on extrusion mode

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